JPH0771521A - Dual type damper pulley - Google Patents
Dual type damper pulleyInfo
- Publication number
- JPH0771521A JPH0771521A JP24592693A JP24592693A JPH0771521A JP H0771521 A JPH0771521 A JP H0771521A JP 24592693 A JP24592693 A JP 24592693A JP 24592693 A JP24592693 A JP 24592693A JP H0771521 A JPH0771521 A JP H0771521A
- Authority
- JP
- Japan
- Prior art keywords
- damper mass
- elastic body
- rim
- rim portion
- mass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/32—Friction members
- F16H55/36—Pulleys
- F16H2055/366—Pulleys with means providing resilience or vibration damping
Landscapes
- Pulleys (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明はデュアルタイプのダイナ
ミック・ダンパープーリに係り、特に内燃機関のクラン
クシャフト等の回転軸に取付けられて、それと一体的に
回転せしめられることにより、外周面に巻き掛けられる
動力伝達用ベルトを介して、所定の後続部材に回転駆動
力を伝達するプーリであって、かかる回転軸の振動を吸
収し、以てかかる回転軸および機関における振動,騒音
を低減するダンパー機構を備えたデュアルタイプダンパ
ープーリに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dual type dynamic damper pulley, and in particular, it is attached to a rotary shaft such as a crankshaft of an internal combustion engine and is rotated integrally with the rotary shaft so that it is wound around the outer peripheral surface. A damper mechanism that transmits a rotational driving force to a predetermined succeeding member via a power transmission belt, and that absorbs the vibration of the rotating shaft and reduces the vibration and noise of the rotating shaft and the engine. The present invention relates to a dual type damper pulley equipped with.
【0002】[0002]
【従来の技術】従来のデュアルタイプダンパープーリ
は、実開昭62−68053号公報に記載のものが知ら
れている。これは図3に示すように、クランクシャフト
等の回転軸1が取付くハブ部2と、このハブ部2の半径
方向外側に位置する円筒状のリム部3と、このリム部3
とハブ部2とをつなぐアーム部4とからプーリ本体5を
構成してある。リム部3の半径方向外側に第1弾性体6
を介してアウターダンパーマス7がリム部3と同心的に
配置され、外周面に動力伝達用ベルトが巻き掛けられる
ようになっている。また、リム部3の内側に位置し、ア
ーム部4に第2弾性体100を介してインナーダンパー
マス101を取付けてある。回転軸1に対しセットボル
ト102のフランジ部103より延びる脚部104がね
じ込まれ、回転軸1をハブ部2に固着している。セット
ボルト102のヘッド部105の軸直角方向端面にスト
ッパ金具106を取付ボルト107で取付けてある。リ
ム部3内に収められたインナーダンパーマス101は、
アーム部4に設けられた4つの保持孔4Aのうちの、ア
ーム部4の直径上に位置せしめられる2つの保持孔4A
に対応する筒壁部位に、軸方向に延びる2つの貫通孔1
08を有している。2. Description of the Related Art As a conventional dual type damper pulley, the one described in Japanese Utility Model Laid-Open No. 62-68053 is known. As shown in FIG. 3, this is a hub portion 2 to which a rotary shaft 1 such as a crankshaft is attached, a cylindrical rim portion 3 located radially outside of the hub portion 2, and a rim portion 3 of the rim portion 3.
The pulley body 5 is composed of the arm portion 4 connecting the hub portion 2 and the hub portion 2. The first elastic body 6 is provided on the outer side of the rim portion 3 in the radial direction.
The outer damper mass 7 is arranged concentrically with the rim portion 3 via the, and the power transmission belt is wound around the outer peripheral surface. Further, the inner damper mass 101 is attached to the arm portion 4 via the second elastic body 100, which is located inside the rim portion 3. The leg portion 104 extending from the flange portion 103 of the set bolt 102 is screwed into the rotating shaft 1 to fix the rotating shaft 1 to the hub portion 2. A stopper metal fitting 106 is attached to an end surface of the head portion 105 of the set bolt 102 in the direction perpendicular to the axis with a mounting bolt 107. The inner damper mass 101 housed in the rim portion 3 is
Of the four holding holes 4A provided in the arm part 4, two holding holes 4A positioned on the diameter of the arm part 4 are provided.
2 through holes 1 extending in the axial direction at the cylindrical wall portion corresponding to
Has 08.
【0003】[0003]
【発明が解決しようとする課題】従来のダンパープーリ
は、インナーダンパーマス101がリム部3の内部にか
つアーム部4に第2弾性体100を介して取付けてある
ため、インナーダンパーマス101の径を大きくするに
は限界があった。径がリム部3の内径により規制される
従来のインナーダンパーマス101は一定の質量を必要
とするため軸方向の長さを一定以上の長さにする必要が
あり、リム部3の内部の軸方向長さほぼ一杯にせざるを
得なかった。そのため、インナーダンパーマス101は
キャンチレバーと同様の構造となり、先端の首振り運動
が大きくなり、第2弾性体100に亀裂が入り、はがれ
てしまうおそれがあった。また、第2弾性体100をゴ
ムで成形するとき、アーム部4の個所におけるゴムのは
み出しをおさえたり、成形後にゴムのバリを除去する必
要もあった。In the conventional damper pulley, since the inner damper mass 101 is mounted inside the rim portion 3 and on the arm portion 4 via the second elastic body 100, the diameter of the inner damper mass 101 is reduced. There was a limit to how large. Since the conventional inner damper mass 101 whose diameter is regulated by the inner diameter of the rim portion 3 requires a constant mass, it is necessary to make the length in the axial direction a certain length or more. The direction length had to be almost full. Therefore, the inner damper mass 101 has a structure similar to that of a cantilever, and the swinging motion of the tip becomes large, which may cause the second elastic body 100 to crack and come off. Further, when the second elastic body 100 is molded with rubber, it is necessary to prevent the rubber from protruding at the portion of the arm portion 4 and to remove the burr of the rubber after molding.
【0004】そこで、この発明は、インナーダンパーマ
スの軸方向長さを短くし、径方向の大きさを大きくして
十分大きな質量となし、首振り運動を抑えて第2弾性体
の耐久性を向上させ、インナーダンパーマスの第2弾性
体からのはがれを防止したデュアルタイプダンパープー
リを提供することを目的とするものである。Therefore, according to the present invention, the axial length of the inner damper mass is shortened and the radial size is increased to obtain a sufficiently large mass, and the swinging motion is suppressed to improve the durability of the second elastic body. It is an object of the present invention to provide a dual type damper pulley that is improved and prevents the inner damper mass from peeling off from the second elastic body.
【0005】[0005]
【課題を解決するための手段】上述の目的を達成するた
め、この発明は、回転軸に取付けられるハブ部と、この
ハブ部の半径方向外側に位置する円筒状のリム部とを有
するプーリ本体の前記リム部の半径方向外側に第1弾性
体を介して円筒状で外周面に動力伝達用ベルトが巻き掛
けられるアウターダンパーマスをリム部と同心的に取付
け、リム部の軸方向外方の側端面に第2弾性体を介して
リング状のインナーダンパーマスを取付けたものであ
る。In order to achieve the above-mentioned object, the present invention has a pulley body having a hub portion attached to a rotating shaft and a cylindrical rim portion located radially outside the hub portion. An outer damper mass, which is cylindrical and has an outer peripheral surface around which a power transmission belt is wound, is attached concentrically to the rim portion on the outer side in the axial direction of the rim portion on the outer side in the radial direction of the rim portion. A ring-shaped inner damper mass is attached to the side end surface via a second elastic body.
【0006】[0006]
【作用】この発明におけるインナーダンパーマスは、そ
の外径が円筒部外径よりも大きく、軸方向の長さを長く
しなくても十分大きな質量とすることができる。また、
軸方向の長さを長くしていないので、首振り運動も抑え
られ、インナーダンパーマスを円筒部端面に取付ける第
2弾性体の耐久性も向上する。The outer diameter of the inner damper mass according to the present invention is larger than the outer diameter of the cylindrical portion, and the mass can be sufficiently large without increasing the length in the axial direction. Also,
Since the length in the axial direction is not long, the swinging motion is suppressed, and the durability of the second elastic body for attaching the inner damper mass to the end surface of the cylindrical portion is also improved.
【0007】[0007]
【実施例】以下にこの発明の好適な実施例を図面を参照
にして説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings.
【0008】図1に示す実施例において、図3に示すと
同様のクランクシャフト等の回転軸1が取付くハブ部2
と、このハブ部2の半径方向外側に位置する円筒状のリ
ブ部3と、このリム部3とハブ部2とをつなぐアーム部
4とから成るプーリ本体5の前記リム部3の半径方向外
側にアウターダンパーマス7を第1弾性体6を介して取
付けてある。第1弾性体6は、アウターダンパーマス7
と、その内側に所定距離隔てて同心的に配置せしめられ
た、長さがリム部3とほぼ同一の薄肉円筒状を成す金属
スリーブ8との間隙内において、それらと一体的に加硫
成形されている。この金属スリーブ8がリム部3の外周
面に圧入・固定せしめられることによって、アウターダ
ンパーマス7はプーリ本体5と一体的に連結される。ア
ウターダンパーマス7の外周面には動力伝達用ベルト
(図示せず)が巻き掛けられる。In the embodiment shown in FIG. 1, a hub portion 2 to which a rotary shaft 1 such as a crankshaft similar to that shown in FIG. 3 is mounted.
And a radially outer side of the rim portion 3 of the pulley main body 5 including a cylindrical rib portion 3 located radially outside the hub portion 2 and an arm portion 4 connecting the rim portion 3 and the hub portion 2. The outer damper mass 7 is attached to the first via the first elastic body 6. The first elastic body 6 is the outer damper mass 7
And a vulcanization molded integrally therewith in a gap between a metal sleeve 8 which is concentrically arranged inside the rim portion 3 at a predetermined distance and which has a thin cylindrical shape whose length is substantially the same as that of the rim portion 3. ing. The outer damper mass 7 is integrally connected to the pulley body 5 by press-fitting and fixing the metal sleeve 8 on the outer peripheral surface of the rim portion 3. A power transmission belt (not shown) is wound around the outer peripheral surface of the outer damper mass 7.
【0009】リム部3の軸方向外方の側端面3Aに第2
弾性体9を介してリング状のインナーダンパーマス10
を取付けてある。また、アウターダンパーマス7も側端
面3A側の端面をハブ部2側(軸方向内方の側)とは反
対側(軸方向外方の側)へ延出し、この延出部分で空間
11を形成し、この空間11内にインナーダンパーマス
10を配置してある。インナーダンパーマス10の中央
にはリム部3の中空部3Bと同一径の孔10Aが形成し
てあり、この孔10Aとリム部3の中空部3Bを利用し
て回転軸1をハブ部2に固着する。リム部3と第2弾性
体9とインナーダンパーマス10とは一体的に加硫成形
されている。A second end is formed on the side end surface 3A of the rim portion 3 which is axially outward.
A ring-shaped inner damper mass 10 through the elastic body 9.
Is installed. Also, the outer damper mass 7 also has its end face on the side end face 3A side extended to the opposite side (the axially outward side) from the hub portion 2 side (the axially inner side), and the space 11 is formed at this extended portion. The inner damper mass 10 is formed in this space 11. A hole 10A having the same diameter as that of the hollow portion 3B of the rim portion 3 is formed in the center of the inner damper mass 10, and the rotary shaft 1 is connected to the hub portion 2 by utilizing the hole 10A and the hollow portion 3B of the rim portion 3. Stick to it. The rim portion 3, the second elastic body 9, and the inner damper mass 10 are integrally vulcanized and molded.
【0010】インナーダンパーマス10の径方向の長さ
をRとし、軸方向の長さをWとした場合、R>Wとな
り、径が大きくできるので質量が比較的大きくとれるこ
ととなる。また長さWを小さくでき、片持ちによるコジ
リ入力を抑え、首振り運動をより小さくすることができ
る。また、このような形状のインナーダンパーマス10
を第2弾性体9を介してリム部3の側端面3Aに取付け
るので、第2弾性体9との接着面積が大きくなり、イン
ナーダンパーマス10がはがれるおそれも少なくなる。When the radial length of the inner damper mass 10 is R and the axial length is W, R> W, and the diameter can be increased, so that the mass can be relatively large. In addition, the length W can be reduced, the bending input due to cantilever can be suppressed, and the swinging motion can be further reduced. In addition, the inner damper mass 10 having such a shape
Is attached to the side end surface 3A of the rim portion 3 via the second elastic body 9, the adhesion area with the second elastic body 9 is increased, and the inner damper mass 10 is less likely to come off.
【0011】図2に示す第2実施例では、アウターダン
パーマス7の軸方向の長さをリム部3の軸方向の長さと
同一とし、リム部3の側端面3A側へは延出しないよう
に形成するとともに、インナーダンパーマス10の長さ
Rを長くしたものを示す。なお、アウターダンパーマス
7はハブ部2側へ延出させたものであっても良い。In the second embodiment shown in FIG. 2, the axial length of the outer damper mass 7 is set to be the same as the axial length of the rim portion 3 so that it does not extend to the side end face 3A side of the rim portion 3. The length R of the inner damper mass 10 is increased in addition to the above. The outer damper mass 7 may be extended to the hub portion 2 side.
【0012】上述したいずれの実施例でも、図面上右
側、すなわち軸方向内方の側にエンジン等の機器類が存
在することとなり、ハブ部2にセットされた回転軸1は
ハブ部2の右側にフランジを有し、このフランジに複数
の取付孔2Aを介して左側からネジ等をねじ込んで固着
する。In any of the above-described embodiments, the devices such as the engine are present on the right side of the drawing, that is, on the inner side in the axial direction, and the rotary shaft 1 set on the hub 2 is on the right side of the hub 2. Has a flange, and a screw or the like is screwed into the flange from the left side through a plurality of mounting holes 2A to be fixed.
【0013】[0013]
【発明の効果】以上説明したように、この発明によれ
ば、回転軸に取付けられるハブ部と、このハブ部の半径
方向外側に位置する円筒状のリム部とを有するプーリ本
体の前記リム部の半径方向外側に第1弾性体を介して円
筒状で外周面に動力伝達用ベルトが巻き掛けられるアウ
ターダンパーマスをリム部と同心的に取付け、リム部の
軸方向外方の側端面に第2弾性体を介してリング状のイ
ンナーダンパーマスを取付けたので、インナーダンパー
マスは半径方向の長さを大きくでき、軸線方向の長さを
短くしても質量を比較的大きくできる。また、軸線方向
の長さを短くできるため、片持ちによる首振り運動を抑
制することがでる。さらに、インナーダンパーマスを径
方向に長くできるので、第2弾性体との接着面積も大き
くなる。As described above, according to the present invention, the rim portion of the pulley main body having the hub portion attached to the rotary shaft and the cylindrical rim portion located radially outside the hub portion. An outer damper mass, which is cylindrical and has a power transmission belt wound around the outer peripheral surface thereof via a first elastic body on the outer side in the radial direction of the, is concentrically attached to the rim portion, and is attached to the side end surface on the axially outer side of the rim portion. Since the ring-shaped inner damper mass is attached via the two elastic bodies, the inner damper mass can have a large radial length, and can have a relatively large mass even if the axial length is shortened. Moreover, since the length in the axial direction can be shortened, the swinging motion due to the cantilever can be suppressed. Furthermore, since the inner damper mass can be lengthened in the radial direction, the adhesive area with the second elastic body also increases.
【図1】この発明の第1実施例を示す断面図。FIG. 1 is a sectional view showing a first embodiment of the present invention.
【図2】この発明の第2実施例を示す断面図。FIG. 2 is a sectional view showing a second embodiment of the present invention.
【図3】従来例を示す断面図。FIG. 3 is a cross-sectional view showing a conventional example.
1 回転軸 2 ハブ部 3 リム部 3A 側端面 5 プーリ本体 6 第1弾性体 7 アウターダンパーマス 9 第2弾性体 10 インナーダンパーマス DESCRIPTION OF SYMBOLS 1 rotating shaft 2 hub part 3 rim part 3A side end surface 5 pulley body 6 first elastic body 7 outer damper mass 9 second elastic body 10 inner damper mass
Claims (1)
ブ部の半径方向外側に位置する円筒状のリム部とを有す
るプーリ本体の前記リム部の半径方向外側に第1弾性体
を介して円筒状で外周面に動力伝達用ベルトが巻き掛け
られるアウターダンパーマスをリム部と同心的に取付
け、 リム部の軸方向外方の側端面に第2弾性体を介してリン
グ状のインナーダンパーマスを取付けたことを特徴とす
るデュアルタイプダンパープーリ。1. A pulley body having a hub portion attached to a rotating shaft and a cylindrical rim portion positioned radially outside of the hub portion, and a first elastic body interposed radially outside the rim portion of the pulley body. A cylindrical outer damper mass around which a power transmission belt is wound is attached concentrically to the rim, and a ring-shaped inner damper mass is attached to the side end surface of the rim axially outwardly through a second elastic body. A dual-type damper pulley that is equipped with.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24592693A JPH0771521A (en) | 1993-09-06 | 1993-09-06 | Dual type damper pulley |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24592693A JPH0771521A (en) | 1993-09-06 | 1993-09-06 | Dual type damper pulley |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0771521A true JPH0771521A (en) | 1995-03-17 |
Family
ID=17140909
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24592693A Pending JPH0771521A (en) | 1993-09-06 | 1993-09-06 | Dual type damper pulley |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0771521A (en) |
-
1993
- 1993-09-06 JP JP24592693A patent/JPH0771521A/en active Pending
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20040511 |